[ovirt-users] iscsi data domain when engine is down

We have an ovirt 4.1 cluster with an iSCSI data domain. If I shut down the entire cluster and just boot the hosts, none of the hosts login to their iSCSI sessions until the engine comes up. Without logging into the sessions, sanlock doesn't obtain any leases and obviously none of the VMs start. I'm sure there's something I'm missing, as it looks like it should be possible to run a hosted engine on a cluster using an iSCSI data domain. Any pointers or suggestions would be greatly appreciated. Many thanks, Devin